There were gaming benchmarks. Intel Alder Lake Destroys AMD In New Gaming Performance Leak | Digital Trends
Here is a game benchmark for you that is interesting. In this they test the 12900K with a RX6600 @1080p. It gets an average of 252FPS. Interestingly Gamers Nexus benched the RX6600 with a 10700K and scored 272FPS.
That means that a 2 generations older mid range Intel Chip beats the new 12900K by 8%. Maybe this is why we are not seeing game benchmarks
https://www.wepc.com/news/intel-core-i9-12900k-benchmark-alder-lake-leak/